servlet之hello Word

package com.suse.servlet;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
@WebServlet("/HelloServlet")
public class HelloServlet extends HttpServlet {
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
  PrintWriter writer = response.getWriter();
        writer.print("hello world, Servlet!");
        writer.close();
        }
}

Note: This no longer need configuration file web.xml

Operating results

the problem of reference
[https://blog.csdn.net/chuck_kui/article/details/54835874]